Ruffed Grouse vs Ahanta Spurfowl
Bonasa umbellus 比較対象 Pternistis ahantensis
Side-by-Side Comparison
| 属性 | Ruffed Grouse | Ahanta Spurfowl |
|---|---|---|
| 学名 | Bonasa umbellus | Pternistis ahantensis |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 36.6 cm (14.4 in) | 34.6 cm (13.6 in) |
| 体重 | 613.0 g (21.62 oz) | 547.5 g (19.31 oz) |
| 食性 | Buds, catkins, and leaves of deciduous trees dominate diet in winter; berries, seeds, and invertebrates … | Feeds on seeds, invertebrates, and plant matter in West African lowland forest and thicket. |
| 一腹卵数 | 6-15 | 3-12 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Ruffed Grouse
Males produce deep, accelerating drumming with wings on hollow logs; thump-thump-thump-rrrrrr. Vocal calls include soft 'quit-quit'; alarm is a sharp 'pit'. Drumming carries up to 400 meters.
Ahanta Spurfowl
Loud, staccato 'krak-krak-KRAAK' from W African forest edge; slightly higher than larger spurfowl. Alarm is rapid explosive cackling. Pairs call in loose synchrony at dawn in secondary growth.
Geographic Range & Migration
Ruffed Grouse
Resident across boreal forests of North America from Alaska south to the Appalachians. Found in deciduous and mixed woodland. Largely sedentary.
Ahanta Spurfowl
Resident of dense lowland and coastal forest in West Africa from Ghana to Cameroon; also found in Bioko Island.
保全状況
Ruffed Grouse
Ahanta Spurfowl
How to Tell Them Apart
Ruffed Grouse
Cryptic brown or grey morph; broad black ruff on neck sides; tail broadly banded grey with black subterminal bar; underparts barred buff and brown; red eye-comb; two colour morphs vary …
Ahanta Spurfowl
Dark brown above with pale buff shaft streaks; whitish below with dark brown streaking; red bill; red orbital skin; yellow legs. Sexes similar; closely resembles Double-spurred Spurfowl; West African forests.
About These Birds
Ruffed Grouse
エリマキライチョウはキジ科の中型ライチョウ（約610g）で、扇形の尾と頸の襞飾りを持つ褐色・灰色の見事な保護色を持つ。北米の落葉樹林と混交林に生息する。雄は翼で叩くことで独特の太鼓のような音を出す。芽・葉・ベリーを食べる。軽度懸念；北米の広域にわたる林に生息する重要な狩猟鳥。
Ahanta Spurfowl
A medium Phasianidae spurfowl (~548 g) of lowland and secondary forest edges in West Africa from Ivory Coast to Nigeria. Dark brown streaked white; red orbital skin. Forages on the ground in pairs or small groups for seeds, berries, and invertebrates. Tolerates forest fragments; Least Concern.